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Original Articles

Abel's Equation and Regular Growth: Variations on a Theme by Abel

Pages 85-100 | Published online: 03 Apr 2012
 

Abstract

Following a 70-year old suggestion of Paul Lévy, a condition is formulated for the regularity of growth of real functions. The condition, which is quite explicit, makes use of the iterates of the function and solutions of Abel's functional equation, and is well adapted to a computer testing.

Numerous computer experiments reveal interesting properties of the proposed regularity criterion.

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